So, yesterday at Hush, I had the opportunity to shoot the Sig and GSG side by side at the Gemtech table. I understand that these guns had thousands of rounds through them yesterday, but the GSG had no problems where the Sig had one fail to extract, felt heavier, and chunky in the grip. While I did have one fail to feed (I believe it was operator error) with the GSG, it felt much better in my hand and lighter, which would increase the length of time I would shoot it in a day. I will be going with the GSG.